ASTROSAT CZTI

Data Quality Report

Orbit 46479

Creation date: 2024-06-27T23:23:40.504480
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A13_037T05_9000006216_46479cztM0_level2.fits modeM0/AS1A13_037T05_9000006216_46479cztM0_level2_quad_clean.evt
Size (bytes)603,645,120132,716,160
Size575.7 MB 126.6 MB
Events in quadrant A7,737,432866,329
Events in quadrant B4,359,389899,112
Events in quadrant C4,028,146889,168
Events in quadrant D5,586,430795,863

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0283581
B0184111
C0176541
D0222572

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81774195.124129%
B81772933.583221%
C8177871.063960%
D81763344.085127%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 8177 8177 83 83 1.02% 1.02%
B 8177 8177 47 47 0.57% 0.57%
C 8177 8177 0 0 0.00% 0.00%
D 8176 8176 185 185 2.26% 2.26%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 3553587 17753.56 958 937 200.1
A 13 248 248698 1238.13 958 937 200.1
A 2 79 148725 738.54 958 937 200.1
B 5 172 166424 862.2 959 926 191.9
B 5 32 164405 851.68 959 926 191.9
B 5 255 120280 621.8 959 926 191.9
C 3 233 279400 1241.55 951 955 224.3
C 9 54 25296 108.53 951 955 224.3
C 12 249 9550 38.32 951 955 224.3
D 1 52 1279659 5420.27 943 912 235.9
D 13 249 235414 993.99 943 912 235.9
D 2 249 196305 828.22 943 912 235.9

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter